Final answer:
NFPA 1901 requires auxiliary brakes on all apparatus with a gross vehicle weight rating (GVWR) of 36,000 lbs. or more. These are safety regulations given by the National Fire Protection Association.
Step-by-step explanation:
The National Fire Protection Association (NFPA) is responsible for defining safety standards in the United States, and NFPA 1901 specifically refers to standard for automotive fire apparatus. NFPA 1901 requires auxiliary brakes on all apparatus with a gross vehicle weight rating (GVWR) of 36,000 lbs. or more. Auxiliary brakes are additional systems designed to assist the main brake system, particularly on heavy vehicles which may need extra support when stopping or slowing down. This requirement ensures that fire apparatus are safe and effective during emergency responses.
Learn more about NFPA 1901